Michael Ettz of Lodi is charged with aggravated assault, assault by auto while driving intoxicated and leaving the scene of an accident.

Ettz has been free on bail after he previously pleaded not guilty to the charges.

Prosecutors say Ettz struck Bergen County Police Officer Daniel Breslin’s vehicle from behind on Route 46 in Lodi in April. Breslin had stopped in the right lane to assist another officer who had pulled onto the shoulder to repair a radio.

Breslin sustained a traumatic brain injury that left him hospitalized for months.